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/*************************************************************************
* Copyright (C) 2010 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library is free software; you can redistribute it and/ *
* or modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library is distributed in the hope that it will be *
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty *
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
/**
* @file
* Progress object implementation.
*/
#ifndef DIMENSION_IMPL_PROGRESS_H
#define DIMENSION_IMPL_PROGRESS_H
#include <pthread.h>
/** Allocate a new progress object. */
dmnsn_progress *dmnsn_new_progress(void);
/** Create a new level of loop nesting. */
void dmnsn_new_progress_element(dmnsn_progress *progress, unsigned int total);
/** Increment the progress counter; should only be called from the innermost
loop. */
void dmnsn_increment_progress(dmnsn_progress *progress);
/** Instantly complete the progress. */
void dmnsn_done_progress(dmnsn_progress *progress);
struct dmnsn_progress {
/* Array of progress elements. Progress is given by P(0), where
P(i) = (elements[i].progress + P(i + 1))/elements[i].total. */
dmnsn_array *elements;
/* The worker thread */
pthread_t thread;
/* Read-write synchronization */
pthread_rwlock_t *rwlock;
/* Condition variable for waiting for a particular amount of progress */
pthread_cond_t *cond;
pthread_mutex_t *mutex;
/* Minimum waited-on value */
volatile double min_wait;
volatile double *min_waitp; /* Hack for const values */
};
#endif /* DIMENSION_IMPL_PROGRESS_H */
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